Closure operator and retaining means



J. LIPOVSKY CLOSURE OPERATOR AND RETAINING MEANS Aug. 18, 1931.

Filed Aug. 5, 1930 2 Sheets-Sheet. 1

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A llorney J. LIPOVSKY CLOSURE OPERATOR AND RETAINING MEANS Aug. 18, 1931.

Filed Aug. 5, 1930 2 Sheets-Sheet 2 By 24% A llorney Patented Aug. 18, 1931 PATENT OFFICE JOHN LIPOVSKY, F KENOSHA, WISCONSIN CLOSURE OPERATOR AND RETAINING MEANs Application filed August 5, 1930. Serial No. 473,154.

This invention relates to operating and retaining means for closures, especially'sliding windows, such as are employed in houses, automobiles, and various enclosures.

Briefly stated, the novelty is predicated upon a practical arrangement of gears and associated shafts having individual operat ing connection with upper and lower window sashes for separably raising and lowering these sashes, the arrangement of parts being such as to not only serve as the operating means, but also serve as a positive holding or retaining means for maintaining the sashes in selected open or closed positions.

The particular arrangement of elements employed for accomplishing these results will become more readily apparent from the following description and drawings. In the drawings:

Figure 1 is an elevational view of an ordinary sash window assembly showing the improved operating devices as developed in accordance with the present inventive conception. 2

Figure 2 is a horizontal section taken approximately on the plane of the line 22 of Figure 1.

Figure 3 is a fragmentary'seotional and elevational view showing theraok and pin- 3 ion arrangement. I

Figure 4 is an edge view of the spiral toothed rack bar.

The invention may be either single or double. I have illustrated the double confistruction in Figure 1, that is, an arrangement for individually operating the upper and lower sashes. The upper sash is denoted by the numeral 5 and the lower sash by the numeral 6. The framework is designated at 40 7 and the numerals 8 represent vertical struts.

Supported in the framework and below the lower sash is a gear housing or casing 9, in which the rotary shafts 10 and 11 are journaled for rotation. The shafts are provided 3 with individual beveled gears 12 and 13 respectively. Each shaft has a square end to accommodate the removable handcrank 1 1 which constitutes the manual means for operating the shafts individually.

Mounted for rotation in appropriate bearings is a power take-off shaft 15 having bevelled gear connections at one end with the gear 13. Above this is a similar shaft 16 having a bevelled gear operatively connected with the gear 12. For sake of distinction the shafts 10 and 11 may be designated as drive shafts and the shafts 15 and 16 as the, driven or power take-off shafts.

On the shaft 15 are bevelled gears 17 and 18 which mesh with companion gears 19 and 20 respectively. These gears are carried by the lower end portions of the perpendicular sash operating shafts 21 and 22 respectively. The upper end portions of these shafts 21 and 22 are journaled in bearings in the framelikebrackets 23 and confined in the brackets in each instance is a spiral worm 24.

This worm is in operating mesh with a spiral pinion 25, the pinion being mounted for rotation in a bracket 26 as shown for example in Figure 3. 'The teeth of the pinion have operating connection with the diagonal teeth on the associated rack bar 27. Thus the rack and pinion structure is operated from the associated shafts 21 or 22 as the case may be. p

By turning the handcrank 14 of the shaft 11, the shafts 15, 21 and 22 are simu1tane-' ously rotated through the medium of the worms and the associated rack and pinion structures, the upper sash 5 may be raised or lowered according to the direction of rotation of the shafts. If found more practical or feasible, the handcrank 1 1 may be eliminated and an electric drive substituted. I have chosen to employ a suitable electric motor 28 appropriately mounted in the framework and provided with a drive belt or chain 29 operatively connected with the lever.

In practice, a remote control electric switch (not shown) is provided for operating the electric motor at will. The arrangement just described is practically duplicated for oper: ating the lower sash 6. For example, the shaft 16 is provided with bevel gears 30 and 31 at its opposite ends in mesh with companion gears 32 and 33, the gears 33 being carried by the lower ends of the perpendicular or upright sash operating shafts 34; and 35 respectively.

Each shaft 3st or 35 as the case may be is provided with a worm 36 mounted in a bearing bracket 37 and operatively connected with the associated rack pinion 38. The pinion co-operates with the rack bar on the window sash. In this arrangement, 1 provide a separate electric motor 39 and a drive element 40 for actuating the shaft 10. Thus the shafts 10 or 11 may be individually rotated to selectively operate the shafts 15 and 16.

Accordingly, the sashes 5 and 6 may be either raised or lowered as is desired and the gearing locked to maintain these sashes in set position. The same fundamental principle is applicable to sliding windows of other types, that is, automobile windows, and windows employed in various types and characters of buildings in general.

It follows therefore, that the gist of the invention is in the provision of electro-mechanical means susceptible of being incorporated in a window frame construction embodying appropriate shafting and gearing as well as rack and pinion means for positively raising and lowering a window sash or sashes as desired.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more detailed description is regarded as unnecessary.

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice if desired.

I claim:

1. In combination with a window frame and a sash slidably arranged therein, a rack bar connected with one side edge of the sash and having spiral teeth thereon, a bracket supported on the frame, a worm gear rotatably supported by the bracket and the teeth of which engage the teeth of the rack bar, a vertically arranged shaft rotatably supported adjacent the window frame, a worm thereon meshing with the first-mentioned gear, and means for imparting rotary movement to the shaft to raise and lower the sash.

2. In combination with a window frame and a sash slidably arranged therein, a rack bar connected to each side edge of the sash and having spiral teeth thereon, a bracket at JOHN LIPOVSKY. 

